[SECURITY] [DSA 083-1] New procmail packages fix insecure signal handling

-------------------------------------------------------------------------- Debian Security Advisory DSA 083-1 [email protected] http://www.debian.org/security/ Martin Schulze October 18th, 2001 - -------------------------------------------------------------------------- Package : procmail...

CVE-2001-0905

Race condition in signal handling of procmail 3.20 and earlier, when running setuid, allows local users to cause a denial of service or gain root privileges by sending a signal while a signal handling routine is already running...

OpenBSD bug

Hi I recently found a vulnerability in OpenBSD kernel that allows any user capable of executing a process to deliver SIGURG and SIGIO signals to any process or group of process owned by any user in the system. Although the default behaviour in OpenBSD is to ignore these signals, this issue could ...

FreeBSD-SA-01:60.procmail

-----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-01:60 Security Advisory FreeBSD, Inc. Topic: Multiple vulnerabilities in procmail signal handling Category: ports Module: procmail Announced: 2001-09-24 Credits: Philip A...

FreeBSD can be compromised locally via signal handlers

Overview The FreeBSD operating system does not adequately clear signal handlers subsequent to a process calling exec on a setuid program. This vulnerability can allow a local attacker to execute arbitrary code as root. Description The unix fork function's purpose is to create a new process from a...

CVE-1999-1224

The vulnerability CVE-1999-1224 affects IMAP 4.1 BETA (and possibly other versions) where improper handling of the SIGABRT signal allows a local user to crash the imapd server, resulting in a core dump that may contain sensitive password information. This is a local-attack scenario with partial c...

sendmail and procmail update

An input validation error in sendmail has been discovered by Cade Cairns of SecurityFocus. This problem can be exploited by local users to gain root access. It is not exploitable by remote attackers without shell access. New packages based on sendmail.8.11.6 have been prepared for Slackware 7.1 a...

[RHSA-2001:093-03] Updated procmail packages available for Red Hat Linux 5.2, 6.2, 7 and 7.1

--------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: Updated procmail packages available for Red Hat Linux 5.2, 6.2, 7 and 7.1 Advisory ID: RHSA-2001:093-03 Issue date: 2001-07-03 Updated on: 2001-07-13 Product: Red Hat Linux...

Небезопасная обработка сигналов (unsafe signal handling)

Определенная последовательность асинхронных событий может приводить к тому, что, например дважды освобождается область в памяти или происходит запись в освобожденную область...

vvfreebsd.txt

Georgi Guninski security advisory 48, 2001 FreeBSD 4.3 local root, yet Linux and BSD much better than Windows Systems affected: FreeBSD 4.3 and probably earlier versions. Risk: High Date: 10 July 2001 Legal Notice: This Advisory is Copyright c 2001 Georgi Guninski. You may distribute it unmodifie...

CVE-2001-1180

FreeBSD 4.3 does not properly clear shared signal handlers when executing a process, which allows local users to gain privileges by calling rfork with a shared signal handler, having the child process execute a setuid program, and sending a signal to the child...

Security Advisory FreeBSD-SA-01:

-----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-01:42 Security Advisory FreeBSD, Inc. Topic: signal handling during exec may allow local root compromise Category: core Module: kernel Announced: 2001-07-10 Credits: Georgi...

Проблемы с обработчиками сигналов в FreeBSD (signal handlers)

При выполнении exec не все обработчики сигналов очищаются, что позволяет встроить свой код в suid-приложение...

FreeBSD-SA-01:42.signal

-----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-01:42 Security Advisory FreeBSD, Inc. Topic: signal handling during exec may allow local root compromise Category: core Module: kernel Announced: 2001-07-10 Revised:...

FreeBSD 4.3 local root, yet Linux and *BSD much better than Windows

Georgi Guninski security advisory 48, 2001 FreeBSD 4.3 local root, yet Linux and BSD much better than Windows Systems affected: FreeBSD 4.3 and probably earlier versions. Risk: High Date: 10 July 2001 Legal Notice: This Advisory is Copyright c 2001 Georgi Guninski. You may distribute it unmodifie...

kosch suid wrapper 1.1.1 - Local Buffer Overflow

// source: https://www.securityfocus.com/bid/2837/info A boundary condition error exists in suid wrapper or 'su-wrapper.' The overflow occurs when a string exceeding approximately 1032 characters is given as the first argument when the program is run. Because the program is installed setuid root,...

Unsafe Signal Handling in Sendmail

RAZOR advisory: Unsafe Signal Handling in Sendmail Issue Date: May 28, 2001 Contact: Michal Zalewski [email protected] Topic: Sendmail signal handlers used for dealing with specific signals are vulnerable to numerous race conditions. Affected Systems: Any systems running sendmail tested ...

sendmail 8.11.4 and 8.12.0.Beta10 available

Sendmail, Inc., and the Sendmail Consortium announce the availability of sendmail 8.11.4 and 8.12.0.Beta10. 8.11.4 revamps signal handling within the MTA in order to reduce the likelihood of a race condition that can lead to heap corruption as described in Michal Zalewski's advisory. The problems...

insecure signal handler design

"Delivering Signals for Fun and Profit" Understanding, exploiting and preventing signal-handling related vulnerabilities. Michal Zalewski [email protected] C Copyright 2001 BindView Corporation 0 Introduction --------------- According to a popular belief, writing signal handlers has litt...

CVE-2001-1349

Sendmail before 8.11.4, and 8.12.0 before 8.12.0.Beta10, allows local users to cause a denial of service and possibly corrupt the heap and gain privileges via race conditions in signal handlers...